Challenge-response systems for spam
I hate challenge-response anti-spam systems. Their fatal flaw is that most From addresses are forged, so every time the user of one of these systems gets a piece of spam, the CR software spams a third party with a challenge.
One of my domains is currently being forged a lot, so I get lots of challenges in my mailbox for mail I never sent.
Starting now, I'm going to take the time to confirm every single one of these challenges, so that the asshole who spammed me with a challenge will get the spam he was trying to block.
One of my domains is currently being forged a lot, so I get lots of challenges in my mailbox for mail I never sent.
Starting now, I'm going to take the time to confirm every single one of these challenges, so that the asshole who spammed me with a challenge will get the spam he was trying to block.